21585615

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:176

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 17812785

約数列:

[1, 3, 5, 15, 19, 23, 37, 57, 69, 89, 95, 111, 115, 185, 267, 285, 345, 437, 445, 555, 703, 851, 1311, 1335, 1691, 2047, 2109, 2185, 2553, 3293, 3515, 4255, 5073, 6141, 6555, 8455, 9879, 10235, 10545, 12765, 16169, 16465, 25365, 30705, 38893, 48507, 49395, 62567, 75739, 80845, 116679, 187701, 194465, 227217, 242535, 312835, 378695, 583395, 938505, 1136085, 1439041, 4317123, 7195205, 21585615]

約数ペア:

[(1, 21585615), (3, 7195205), (5, 4317123), (15, 1439041), (19, 1136085), (23, 938505), (37, 583395), (57, 378695), (69, 312835), (89, 242535), (95, 227217), (111, 194465), (115, 187701), (185, 116679), (267, 80845), (285, 75739), (345, 62567), (437, 49395), (445, 48507), (555, 38893), (703, 30705), (851, 25365), (1311, 16465), (1335, 16169), (1691, 12765), (2047, 10545), (2109, 10235), (2185, 9879), (2553, 8455), (3293, 6555), (3515, 6141), (4255, 5073)]